Force-pump



(No Model.) Wl Force Pump'- No. 237,295. Patented Feb; "188" 1| @7.2. 1"",1 f1 I/ I r l j! ml llll|l|I l.

fr I v ial. 'mmm L All.

Uivrrnn TATES PATENT arten..

GEORGE W. LAWBAUGH, 0F GENESEO, ILLINOIS.

FORCE-PUMP.

SPECIFICATION `forming part of Letters Patent No. 237,295, dated February 1, 1881.

Application iled November 8, 1880. (No model.) I

To all whom 'it may concern:

Be it known that I, Gno. W. LAWBAUGH, of Geneseo, in the county of Henry, and in the State of Illinois, have invented certain new and useful Improvements in Force-Pumps; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specication, in whichi Figure 1 is a perspective view of my pump and pump-stock separatedlfrom each other. Fig. 2 is a like'view of the same as combined for use, and Fig. 3 is avertical central section of said parts.

Letters of like name and kind refer to like parts in each of the figures.

The design of my invention is to simplify the construction and to increase the efficiency of force-pumps; and to this end it consists in the means employed for forming a tight joint between the pump cylinder and stock, substantially as and for the purpose hereinafter specified.

In the annexed drawings, A represents the cylinder of my pump, having an open upper end, and having its lower end formed upon an angle of about forty-five degrees from a vertical line, and inclosed by means of a plate, B, that at its center is provided with a semispherical perforated portion, b, above which is placed a nap-valve, C, of usual form, that is arranged to open upward.

Immediately above the lower end ofthe cylinder A is a lateral branch, A', which has a vertical outer end, and within the same is provided with a groove, a, that forms two concentric circular Vshaped edges, a', as seen in Figs. l and 3.

Within the inner end of the branchA is provided a flap-valve and seat, D, which have a downward and an outward inclination from the interior of the cylinder A, said valve bein g arranged to open outward.

A plunger, E, of ordinary constructiomis fitted within the cylinder A, and when caused to reciprocate by means of a plunger-rod, F, will cause water to be drawn inward through the lower valved end-of said cylinder, and to be expelled therefrom through the branch A.

The cylinder A is secured to or upon a pump-stock, G, by means of straps H and H, one of which passes around each end of said cylinder and around the contiguous portion of said pump-stock. 'Ihe open end of thebranch A bears against the pump-stock G, and incloses an openin g, g, which communicates with the interior of the latter. A water-tight joint is produced between the end of said branch and said pumpstock by means of" the V- shaped edges a', which cut into the wood, and by means of an annular gasket, I, of rubber or other yielding material, which is placed within the groove a between said concentric edges.

From the upper portion of the pump-stock G the usual discharge pipe or spout g' extends outward and then downward, and in order that a flexible hose, K, may be connected therewith and extended horizontally outward without breakage, an elbow, lc, is attached to the end of said hose, and is adapted to be passed over the end of said spout, and to be connected therewith by means of locking-lugs similar to those employed for hose-coupling. As thus arranged the hose can be extended outward from. the pump with perfect safety, as it will not be bent by such operation.

It will be seen that the seat of the outletvalve has such inclination as to cause its upper end to project into the cylinder, while the seat of the inlet-valve has an inclination which causes it to approach the plane of the former. This construction lessens the dead-water space within the cylinder and correspondingly reduces the friction and, loss of power caused by such dead y water, it being true that much power is required to overcome the inertia of `such water, audits stoppage, when the plunger or piston changes its direction, is the occasion of a further loss of power, the waste corresponding to the amount of dead water contained within the cylinder.

The means employed for connecting a flexi ble hose to or with the discharge-spout is not claimed herein,it being my intention to make such improvement the subject of a separate I, substantially as and for the purpose speoi- 1o tied.

In testimony that I claim the foregoing I have hereunto set my hand this 3d clay of November, 1880.

GEO. W. LAWBAUGH.

patent.

Having,` thus fully set forth the vnature and merits of my invention, what I claim as new7 As a means for forming a joint between the cylinder A and pump-stock G, the concen- Witnesses: tric V-shaped edges a', separated by the D. E.4M0RT0N, groove a, which contains the iiexible gasket I E. A. WOOD. 

